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<title>Using as: LM32-Regs</title>

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<a name="LM32_002dRegs"></a>
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<p>
Next: <a href="LM32_002dModifiers.html#LM32_002dModifiers" accesskey="n" rel="next">LM32-Modifiers</a>, Up: <a href="LM32-Syntax.html#LM32-Syntax" accesskey="u" rel="up">LM32 Syntax</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Register-Names-9"></a>
<h4 class="subsubsection">9.20.2.1 Register Names</h4>

<a name="index-LM32-register-names"></a>
<a name="index-register-names_002c-LM32"></a>

<p>LM32 has 32 x 32-bit general purpose registers &lsquo;<samp>r0</samp>&rsquo;,
&lsquo;<samp>r1</samp>&rsquo;, ... &lsquo;<samp>r31</samp>&rsquo;.
</p>
<p>The following aliases are defined: &lsquo;<samp>gp</samp>&rsquo; - &lsquo;<samp>r26</samp>&rsquo;,
&lsquo;<samp>fp</samp>&rsquo; - &lsquo;<samp>r27</samp>&rsquo;, &lsquo;<samp>sp</samp>&rsquo; - &lsquo;<samp>r28</samp>&rsquo;,
&lsquo;<samp>ra</samp>&rsquo; - &lsquo;<samp>r29</samp>&rsquo;, &lsquo;<samp>ea</samp>&rsquo; - &lsquo;<samp>r30</samp>&rsquo;,
&lsquo;<samp>ba</samp>&rsquo; - &lsquo;<samp>r31</samp>&rsquo;.
</p>
<p>LM32 has the following Control and Status Registers (CSRs).
</p>
<dl compact="compact">
<dt><code>IE</code></dt>
<dd><p>Interrupt enable.
</p></dd>
<dt><code>IM</code></dt>
<dd><p>Interrupt mask.
</p></dd>
<dt><code>IP</code></dt>
<dd><p>Interrupt pending.
</p></dd>
<dt><code>ICC</code></dt>
<dd><p>Instruction cache control.
</p></dd>
<dt><code>DCC</code></dt>
<dd><p>Data cache control.
</p></dd>
<dt><code>CC</code></dt>
<dd><p>Cycle counter.
</p></dd>
<dt><code>CFG</code></dt>
<dd><p>Configuration.
</p></dd>
<dt><code>EBA</code></dt>
<dd><p>Exception base address.
</p></dd>
<dt><code>DC</code></dt>
<dd><p>Debug control.
</p></dd>
<dt><code>DEBA</code></dt>
<dd><p>Debug exception base address.
</p></dd>
<dt><code>JTX</code></dt>
<dd><p>JTAG transmit.
</p></dd>
<dt><code>JRX</code></dt>
<dd><p>JTAG receive.
</p></dd>
<dt><code>BP0</code></dt>
<dd><p>Breakpoint 0.
</p></dd>
<dt><code>BP1</code></dt>
<dd><p>Breakpoint 1.
</p></dd>
<dt><code>BP2</code></dt>
<dd><p>Breakpoint 2.
</p></dd>
<dt><code>BP3</code></dt>
<dd><p>Breakpoint 3.
</p></dd>
<dt><code>WP0</code></dt>
<dd><p>Watchpoint 0.
</p></dd>
<dt><code>WP1</code></dt>
<dd><p>Watchpoint 1.
</p></dd>
<dt><code>WP2</code></dt>
<dd><p>Watchpoint 2.
</p></dd>
<dt><code>WP3</code></dt>
<dd><p>Watchpoint 3.
</p></dd>
</dl>




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